Pneumatic wheel



v J n 1 9- s. CARLES ET AL PNEUMATIC WHEEL Filed Jan. 1928 I 2Sheets-Sheet 1 June 25, 1929. V

s. CARLES ET AL 1,718,854

PNEUMATIC WHEEL Filed Jan. 5, 1928 2 Sheets-$heat 2 Parental June 25,1929.

UNITED STATES PATENT OFFICE.

PNEUIATIC WHEEL.

Application filed January 5, 1928, IBerial In. 244,721, and in CubaDecember 28, 1927.

This invention relates to pneumatic wheels, specially those used forvehicles, and its main object is to provide a wheel'of that classembodying means whereby when the inner tube is punctured and the rimbecomes excentric the rim is caused automatically to reassume itsconcentric condition, thus'prethe tube and tofore.

" normal position in which the tube is full The invention is describedwith reference to the figures of the annexed drawing, in which:

Fig. is an outer front view of the wheel.

, Fig. 2 is a view similar to Fig. 1 inthe of air, one of the outerdiscs being taken 011.

within a shoe or rubber tire 11 which ma be divlded by a slot or cut 12between its rders, which slot is T referably placed on channel 3 of mainbo y 1; Both bodies, the v central land annular 4, are coveredvon. theirtwo faces by means of two platesor discs 13 p which are securedtosaidmain body 1 by means of a luralit ofbolts 14 arranged in a circlean 13 and throu h openings in the main body 1, each of said olts havingon one end portion a transverse annular flange 15 which seats in acorresponding recess 16 in one of plates threaded ends of each'bolt 14is threaded at 7 the corresponding end of abutment 17 a nut 18, and onthe opposite end a nut 19 against a washer 20.

Plates 13 have fixed through holes in the i equidistant from one another55 and which pass through holes in said plates same a pluralit (threeare indicated in the 9 drawing) of be ts 21 fixed (in the same mannerasscrews 14:;l by means of nuts 22 and 23 and washer 24, t ese bolts 21serving to avoid bulging of plates 13 under lateral movement h of outerbody 4, and each bolt 21 having a 55 30 Fig. 4 is a section taken on thevertical transverse'annularflange 25 which fits in an diametral line inFig. 2. V i inner'recess 26 correspondingtoan outer abut- Fi 5 is apartial diametral section of the ment 27 of one of the discs 13, andsaid bolts whee on line .5-5 of Fig. 3. are equidistant from the centerof the wheel Fig. 6 is a partial diametral section sim and equidistantfrom one another, the same Fig. 3 is a view similar to Fig. 2, partiallybroken away, in the position in whichonce the tube has been punctured;the wheel has been self-centered again through the proper mechanicalmeans.

' with a central'opening 2 with wed e-wa 2'- ilar tothat of Fig. 4showing a modified form of the central body of the wheel. Y

In Figs. 1, 2, 3and 4, is illustrated a wheel composed of a main centralbody 1 provided for the passage and securing of a s aft not shown), andsaid central body 1 has at its periphery a channel 3 for seating of thetube and tire as will be 'hereinafterfexplained. Around said main body 1and separated from the same is an annular body 4 which may be'of metalor of wood, the same as the eentralbody 1, and which has at its innerperi hery a channel, 5 of'curvature'opposite to ciiannel 8 ofmain body 1and at .itsouter periphery has a fixed metal rim (1 provided tire 8designed to tread on the 7 forming a channel passing through slots 28 inthe outer annular ody 4. Said slots 28 are wider at the center than atthe ends and have curved faces which lead to the ends which are roundedand of such a diameter that in the same the bolts I farther endis-transversely mounted a pin 30 1 which acts as the pivoting shaft to adetent 31 which owing to the tension of a coil spring i 32 tends topress the free portion of said detent 31 against the inner face of slot28 until engagin the same. In this manner there are 1 mm two sets ofdetents 31 and springs 32 at the opposite ends of each slot '28and in.

opposite positions. a In the normal operation of the wheel the inflatedtube 10 keeps the annular body 4 se- 0 cared to the central dy 1, owingto the friction, both being in concentric position, but

when for 'any reason the tube 10 is owing to the weight of the vehic eit tends immediately to descentralize the central bod 1 with respect tothe outer annular body Thereupon the bolts 21 which normally occupied aplace in-the central portion of slots 28,- advance ends of the same,according to the direction of rotation, and thereb overcome the tensionof the 5 rings 32, so t at the detents 31 become'lodg in one of theround ends of the slots 28 in which ends they are retained by the freemovement of the correspondinghdetent 31 on its pivot 30, once the bolts21 ave passed beyond the free end of the same, and hence the central bod1 will be perfectly centered with respect to t e outer annular body 4,and the wheel may continue 1 rotating without there bein any danger ofaccident or of destruction 0 the tube 10 and shoe 11.

In Fig. 6 is shown a modified form of the. wheel in which the maincentral body 1" is composed of two members 1" the a uttin inner faces ofwhich are parallel with and mi way between the discs 13 and theperipheral channel 3 of the main body 1" has a proper section forfitting the flanges or beads 33 of a tire 11 of the common type whichembraces the tube 10; In this form the division of tion of the wheel mayvary without altering the essential feature of the invention, which isas set forth in the following claims.

What we claim is 1. In a pneumatic wheel having a central circular body,an outer annular body concentrically spaced from the first body, a tubein the annular space between said bodies, and plates covering the outersides of said bodies,

the outer body, which comprises a plurali of bolts fixing the plates toeach other an passing through elongated slots-formed in the outer ody,and detents pivotally mounted near one end of said slots and actuated bysprings, which detents are adapted to retain said bolts against the endsof the slots to maintain concentricity of said bodies in case ofdeflation of said tube.

2. In a pneumatic wheel having a central circular body, an annular bodyconcentrically spaced from the first body, a tube in the annular spacebetween said bodies, and plates covering the outer sides of said bodies,a driving connection between the plates and the outer body, whichcomprises a plurality of bolts fixing the plates to each other andpassing through elongated slots formed in the outer body, and detentspivotally mounted near both ends of said slots and actuated by springs.which detents are ada ted to retain said bolts against the ends 0 theslots, to

maintain concentricity of said bodies in case of deflation of said tube.

3. In a pneumatic wheel having a central circular body, an annular bodyconcentrically spaced from the first body, a tube in the annular spacebetween said bodies, and plates covering the outer sides of said bodies,a driving connection between the plates and the outer body, whichcomprises a plurality of bolts equidistant from the center of the wheeland equidistant from one another, which tighten the plates against thebodies and pass through elongated slots of arched shape and wider attheir centers than at their ends and formed in the outer annular body,detents pivotally mounted in opposite .itions to each other near theends of said sl d: and actuated by springs normally tending to throw thefree end of said detents towards the interior of the slots, said detentsbeing adapted to retain said bolts against the ends of the slots tomaintain concentricity of said bodies in case of deflation of said tube.

In witness whereof we aflix our signatures.

' SIMEON CABLES. LUIS MAYOLINO.

unctured, a driving connection between the plates aiid

